Paper-cutting machine.



C. SEYBOLD.

PAPER CUTTING MACHINE.

APPLICATION FILED APR. II. I916.

1.,Q6KZ83 Patented May 21,1918.

3 SHEETS-SHEET I.

C. SEYBOLD.

PAPER cunme MACHINE.

APPLICATION FILED APR. 1-1; 1916. 1 ,267 283 Patented May 21, 1918.

3 SHEETS--SHEET 2. /0/

C. SEYBOLD.

PAPER CUTTING MACHINE.

APPLICATION FILED APR. 11, 1916.

Patented May 21, 1918.

3 SHEETSSHEET 3.

CHARLES SEYBOLD, OE DAYTON, OHIO.

PAPER-CUTTING MACHINE.

Specification of Letters I'atent.

Patented May 21, 1218.

Application filed April 11, 1916. Serial No. 90,472.

To all whom it may concern:

Be it known that 1, CHARLES SEYBoLo, a citizen of the United States, anda resident of the city of Dayton, in the county of Moutgomery and Stateof Ohio, have invented certain new and useful Improvements inPaper-Cutting Machines, of which the following is a full, clear, andexact descript on, reference being had to the accompanying drawings,forming part of this specification.-

My invention relates to paper cutting machines especially designed forthe trimming of books, pamphlets and the like, in which three knives areemployed, one for the front and two for the ends of the pile, the knivesbeing arranged to act automatically in succession, the front knifemaking the first cut and the two end knives following the cut of thefront knife as it reaches the end of its return stroke.

The invention consists of that certain novel construction andarrangement of parts to-be hereinafter particularly pointed out andclaimed, whereby the greatest accuracy with a capacity for a very largerange-of work can be attained, and in which the necessity of turning thepiles of material or the table for the front and end cuts is obviated,and a most powerful and efficient machine is provided at a minimum costof manufacture.

In the drawings,

Figure 1 is a front elevation of my improved machine and ,also showingat the upper left side a detail of the rack and pinion,

Fig. 2 is a side elevation.

Fig. 3 is a top plan view of the safety brake construction on-thedriving shaft.

Fig. 4 is a central longitudinal section of the safety brake mechanism.

Fig. 5 is a vertical cross section of the machine.

Fig. 6 is a front elevation of the end knife carrier mechanism.

Fig. 7 is a cross section of the upper portion of the clamp bar.

Fig. 8 is a perspective View of a portion of the back gage operatingmechanism,

Fig. 9 is a perspective viewof the back gage.

Fig. 10 is a front and side elevation of the clamp column for attachingthe pattern blocks.

Fig. 11 is a perspective view of a pattern block.

Fig. 12 is a detail showing clamping mechanism.

The operating parts of the paper cutter are mounted in a solid andsubstantial casting 1, forming supporting standards and framework forthe various shafts and operating mechanism of the machine. Upon theupper portion of this framework and above the table top 2 are the sidestandards 3, 3, for holding and guiding the knife carriers and clamp.

Mounted in suitable bearings in the lower portion of the framework isthe power shaft 4, carrying the fly wheel 5, which shaft receives itspower by belt and pulley from any suitable source of power. The drivingpower is communicated from the power shaft 4 by a train of pinions andgears 6, 7, 8, to the large intermeshing gears 9, 10, mounted on the twomachine driving shafts 11 and 12', mounted in suitable bearings in theframework, one of these driving shafts 12 being designed to actuate thefront knife, and the other shaft 11 to actuate the two end knives. Theknife carrier 13 for the front knife 14 is arranged to reciprocate inguide slots 15 in the end frames 3, and is coupled at each end outsidethe framework by the pulling bars 16, 16, with crank pins 17, 17, oneach end of the driving shaft 12, under the rotation of which the knifecarrier and the knife attached thereto is reciprocated during theoperation of themachine, the knife carrier being given a diagonal orshearing movement by means of the roller 18 thereon engaging in thediagonal guide slot 19 in the frame.

The two knives 20, 20, for making the end cuts, are mounted atrightangles to the front knife on the knife holders 21, 21 (Fig. 6). Theseknife holders are in turn mounted on the knife carrier 22 which extendsacross the machine paralell to the front knife carrier 13, and is guidedin a diagonal direction by rollers guided in the gui e slots 23, 23, inthe side frames 3, 3. This knife carrier 22 is coupled by the pullingbars 24, 24, on each end outside the frame to the crank pins 25 on thedriving shaft 11, and the cranks for the shafts 11 and 12 are soarranged that at the end of each complete operation of the machine thetwo knife carriers will rest about midway of the full extent of theirrespective up arid down movement. When the machine has started, the gear10 will rotate to draw down are : the knife carrier for the front knife,while the gear 9 will rotate in the opposite direction and will carryupward the knife carrier for the end knives. When the front knife hasreached the cutting table, the end knives will be at the full limit ofthe up-' will be no interference between the action. of the knives, themachlne being automatically stopped at the end of a complete operation,with both knives resting about m1dway of their respective up and downmovements.

In order to quickly adjust the end knives toward and away from'eachother for vanous sizes of books and pamphlets to be trimmed, the knifeholders 21 Wlll be mounted on the knife carrier so as to be adapted toslide thereon toward and away from each other. As shown in the sectionof the knife carrier 22 in Fig. 5, there is a keyway 26 1n 7 the base ofthe knife carrier and a T-slide 27 along the front side of the knifecarrier, and corresponding parts of the holders ride in these grooves. Aright and left threaded screw 28 engages these two knife holders 21,

which is operated by the hand wheel 28 to adjust the knife holders and.the slde knives toward and away from each other for the desired size ofthe books to be trimmed.

In order to properly support the side frame 3 at the rear, inasmuch asthe up er end of the side frames extend considera ly to the rear'of thebase of the machine, I prefer to provide a standard bar 30, the lowerend of which rests upon the floor; although where the main framework issufficiently massive, this rear supporting bar 30 for the frame may beomitted.

The power clam arranged to be reciprocated, to clamp an hold the pilesin connection with the action of the knives, comprises a substantialcross bar 31, arranged to slide up and down in vertical slots in theside frame. The lower end of this clamp bar is Y provided with a broadbase 32 formed with a pair of T.grooves 33 runnin transverse the clampbar and on this bar is supported the clamp column 34 by means of the T-heads 35 (Fig. 10), which ride in the grooves 33,33, while a screw 36(Fig. 7)

mounted on the clamp late, engages a screw-threaded recess in t e column34,- so.

that the column can be adjusted transverse the clamp bar. The lower endof the clamp column is sl0tted,'and in this slot is mounted a hook 37 onthe pin 38. The hook 37 engages the pin 39 on the upper surface of theclamp block 40 (Fig. 11) and the clamp block is thus suspended from anda "sh ht rockin the 0 amp block bars each car wardly rejecting stud 44,which is enga ed locked to the clamp column, so as to give motion. Onthe base of pose of actuating the clamp mechanism to,

bring pressure u on the pile during the cutt1ng operat1on,-- make use ofthe devices shown and described in my prior Patent No. 1,100,000 of June16, 1914. 4

At the ends of the clamp bar 31, are downwardl depending pullin bars 43,shown in 40 a pattern block 41 of a the desired size is secured. Thehook 37 is dotte lines in Flgs'. 1 an 2. These pulling at their lowerend an outby a bi rcate'd arm 45, pivotall secure to crank arm 46 on therock shaft 4 extending across the machine 'from side to side andprovided at each end with one ofthese crank arms. thereon nearits-middle portion a segment gear 48, which meshes with the segment gear49, which is loosely mounted on the riving shaft 12. The hub 50 of thissegment gear is formed with afriction disk, the

The rock shaft 47 has secured periphery of which is provided with the ausual friction band of leather and which is engaged by a split frictionring 51. One end of this slit friction ring is coupled by a bolt with tecrank armon the crank pin which is journaled in the opposed half of 5the split friction ring. The crank pin passes loose y through a suitableopenin in a-disk plate52, which is keyed to the sha 12. The crank .pin'on the outer face of the disk 52 1s providedwith a crank arm 53,carrying a roller 54. This roller bears against the cam 55, looselymounted on the shaft 12, but secured to the frame so that it'ca'nnotrotate, and'as the shaft 12 is rotated, the roller 54 rides on the cam.55 andcauses the frlctionband to ti hten on the friction surfaceconnected wit the hub of the segment gear 49, thus coupling the gear tothe shaft 12 with a powerful friction clutch and draw- To return theclamp to its normal position above the pile, I prov-idea coiled spring56. The spring bears between the projecto the framework and the lowerend of a depending arm 59, which is curved up over the side of the frameat 60 and secured to the rock shaft 61. This rock shaft 61 also carriesthe arm 62, pivotally secured at 63 to the clamp bar, so that when theclamp tion or base 57 on the bracket 58 secured bar is lowered, thecoiled spring is compressed and when the clamp bar is released thesegment gears to their normal position,

a cam 65 is mounted on the driving shaft 12, which cam engages a roller66 on one end of the bell crank lever 67 journaled in the base of themachine. The outer arm of this lever is coupled to a lifting bar 68which is pivoted to the crank arm 46 on the rock shaft 47.

As described in my former Patent No. 1,100,000, the action of this camis so timed that after the clamp has been'brought down on the paper pileand the knives have been reciprocated to trim the front and end edges ofthe books, the cam comes in contact with the roller 66 and through theconnecting devices the rock shaft 47 is rocked back to its normalposition, and with it the gears 48 and 49. Then the coiled spring 56 isfree to raise the clamp to its normal position above the paper pile.

A foot lever 69 is also provided, connected by a connecting bar 70 withan arm coupled to the pulling bars for the clamp so that by depressingthe foot treadle the clamp can be rapidly lowered to the paper pile whendesired.

It frequently happens that when books and pamphlets of spongy paper areto be trimmed, the pressure of the pattern board causes the uppermostportion of the pile to curve and the result is that with the ordinaryvertical face for the back gage, the upper portion of the pile is nottrimmed of the same width as the lower portion. In order to overcomethis difliculty, I construct my back gage in two parts. The body of theback gage 71 is provided with the usual screwthreaded collars 7 2 at thebase, which collars are engaged by the horizontal screw 73 (Fig. 5)which runs to the front of the machine for adjustment in the usual way,so that the rotation of the screw causes the back gage tomove forwardlyor rearwardly. The contacting portion 74 of the back gage is pivoted at75 to the body portion and extends rearwardly over the body portion andis provided at the back end with a regulating set screw 76, so that byadjusting the set screw 76 the vertical face of the pivoted'portioir 74may be tilted forward, whereby the front edges of the pile may beshifted forward to compensate for any curvature of the pile under theclamp pressure, the back gage being held in its adjusted position by thecoiled spring 77 interposed between a boss on the tilting portion andthe head of a pin 78 mounted on the body portion 71 of the back gage,which pin passes through an opening in the tilted portion. There is alsoa depending lug 79 on the tilting portion which takes into a socket inthe body portion, which lug is provided with a hole to register with thehole 80, so that a pin can be inserted to lock the two parts togetherwhen the clamp is to be used in the ordinary way with the gaging surfacevertical.

In order to properly adjust the pile of paper to be trimmed, it isnecessary to have the side or end gage as well as the usual back gage,and in order that there may be no interference between such end gage andtheoperation of the end trimming knife, I provide as follows: A gagemember 81 is provided with the usual elongated vertical face and this ismounted (Figs. 8 and 9) in a hinge member 82 which is provided with abeveled keyway 83 to receive the beveled key 84 on the gage member, andthe gage member is held in adjustable position by the knurled set screw85. The hinge member 82 is mounted on a pivot pin 86 extending upwardthrough the plate 87, which plate is secured to the side of the frame inadjustable position by screws or bolts passing through the slots 88. Thelower end of the pin 86 is provided with a crank arm 89 coupled by theconnecting bar 90 with the lever 91, pivoted at 92 in a bracket at thebase of the frame. This lever 91 carries the roller 93 which bearsagainst the cam 94 on the shaft 11, the roller being kept in engagementwith the periphery of the cam by the spring 95 bearing between a lug onthe frame and the head 96 at the lower end of the bar 91. This cam 94 issopositioned on the shaft 11 (by the rotation of which the end knivesare actuated), that with the commencement of the downward throw of theend knives, the roller 93 will ride up on the raised portion of the cam94 and through the medium of the connecting bar 90 rock the pin 86 whichcarries the gage member, so that by this construction the end gage iswithdrawn from the side edge of the pile with the actuation of the endtrimming knives. At the completion of the throw of the end knives, thegage is brought back to normal position by the action of the spring 95.In order to serve as an effective stop for the movement of the end gage,the hinge member 82 of the gage is provided with a stop 97 usually shodwith rubber, which comes in contact with the side frame.

In order to secure the safety ofthe operative and to warn him that themachine is in operation, I provide a guard or shield 98, preferably ofsheet metal, which is mounted to slide up and down in vertical guideways99 (Fig. 5) in the side frame. This shield, which is shaped to extendoutwardly over the front of the table, is; connected by the upwardlyextending side rods 100 to the .vertical arms 101, 101, on the rock.shaft 102, which rock shaft is mounted in the 'a pinion 103 whichmeshes with a rack 104 on the vertical rod 105. This rod is connected atits lower end to a horizontal arm 106 mounted on a rock shaft 107 andjournaled in bearings on the side of the frame and carrying on its outerend an arm 108 with roller 109, which roller bears on the eriphery of acam 110 on the shaft 12. ounted on the rod 105 is a coiled spring 112which bears between a collar 113 on the rod and a lug 11 1 on the framethrough which the bar 105 passes. When the guard 98 is in its uppermostposition, as illustrated in the drawings, the roller 109 on the rockshaft 107 is raised by the cam 110, so that the coiled spring 112 isunder tension. Now as the knives begin todescend, the tension of thecoiled spring draws downwardly the rod 105 which with its rack rotatesthe pinion 103- and rock shaft 102 to cause the guard or shield todescend to the table. As the shield is thus actuated by the spring 112,the shield can be stopped by the hand or arm or even be moved byupwardly compressing the spring112 so that if any part of the person ofthe operator is struck by the descending shield, it will merely serve asa warning and not cause damage.

The shield during the operation of the knives remains on the tablecompletely covering up the cutting mechanism, but as the knives arecarried back to the top of the stroke, the cam roller rotates upon thecam 110', which lifts the rod 105, rocking the shaft 102 in the oppositedirection and raising the shield to itsuppermost position.

As in my former machine, the power shaft is thrown into and out ofoperation by a friction clutch intermediate the shaft.

and hub of the fly wheel 5, the clutch being shifted into and out ofoperation by the hand lever 115 mounted on the rock shaft 116. If forany reason, however, when the clutch is thrown off, the fly wheel shouldstick, or for any other reason the power mechanism should fail to becomedisconnected, I provide a safety brake attachment for the power shaft. IMounted onthe inner end of the lever rock shaft 116 is a depending arm117 which is coupled to a bifurcated bar '118 (Fig. 3), which bar iscoupled to the annular plate 119 through the central opening of .whicthe power shaft passes.

The annular plate 119 carries projecting pins 120 which pass throughlugs on a corresponding annular plate 121, which is fixed to the frame.The pins 120 have heads 122 with coiled springs 123 bearing between thelugs on the fixed plate and the heads, which springs tend to pull theplate 119 up toward the corresponding plate 121. Keyed to rotate withbut sliding on the power'shaft 1 is the disk late 124, carrying annularcon-' taetin sur aces shod with leather or other suitab e brake material125, and when the rock shaft 116 is rocked by the starting lever tothrow out the clutch connection, the move-' ment of the lever assistedby thesprings 123,

brings the brake surface-125 into close braking contact with the plates119, 121, and a powerful brake is supplied against the -ro-' tation ofthe shaft 4.

To illustrate this brake construction, 'I'

have shown the parts separated in Fig. 4.

As the general construction of machine is in many respects like thesingle knife paper cutter illustrated in my former Patent No. 1,100,000,it will not'be necessary to undertake a description of the detailedoperation of the machine. By my present invention, I have coupled to thesingle cutting knife construction of this patent, additional mech-'anism for actuating end trimming knives at the conclusion of the strokeof the front knife. In paper cutting machines for simultaneouslytrimming the front and ends of books and pamphlets, so far as I amaware, 1t has been necessary heretofore either to turn the book piles,or to rotate the table upon which the piles of paper are mounted.

The ease with which the pattern boards for the clamp can be changed bymeans of the hook construction for any size of book, and the ease withwhich the end cutting knives can be adjusted toward and away from eachother, with the ability to adjust the back and end gages within widelimits, gives a very large'range as to capacity of the machine, whilethe safety appliances which have been fully described render thebook-trimmer proof against accident.

Having thus described myinvention, what I claim as new and desire tosecure by Letters Patent, is

clamp bar whereby they may be reciprocated I I in succession to hold andtrim the front and ends of a paper pile in one continuous operation.

2 In a paper cutting machine, the combination with a pair of knifecarriers and a clamp bar intermediate the lmife carriers,

each mounted to reciprocate in parallel relation, of a clamp column witha pattern board removably coupled thereto, and with the clamp columnadjustable transversely of the clamp bar, a knife secured to one carrierand a pair of knives secured to the other carrier at right angles to thesingle knife,

and interconnected actuating mechanism for the two carriers and theclamp bar whereby 1 they may be reciprocated in succession to hold andtrim the front andends of a paper pile in one continuous operation.

3. In a paper cutting machine, the combination witha pair of knifecarriers and a clamp bar intermediate the lmife carriers,

. each mounted to reciprocate in parallel relation, of a; clamp columnwith a pattern board removably coupled thereto, and with the clampcolumn adjustable transversely of the clamp bar, a knife secured to onecarrier and a pair of knives secured to the other carrier at rightangles to the single knife, with means for adjusting said pairof knivesin .parallel relation toward and away from each other, andinterconnected actuatin mechanism for the two carriers and the-c amp barwhereby the may be reciprocated in succession to ho d and trim the frontand ends of a paper pile in one continuous operation.

4. In. a paper cutting machine provided with mechanism for cutting thefront and ends of a paper pile, a pivoted end gage for adjusting theends of the pile, a driving shaft for the cutting mechanism andconnecting mechanism intermediate the gage and driving shaft to swingthe gage out of the pathway of the cutting mechanism.

5. In a paper cutting machine, in combination with knife carriers andknives and means for reciprocatin them to trim the front and end edges 0a paper pile, of a pivoted end gage for adjusting the ends of the pile,a driving shaft for the cutting knives and connecting mechanismintermediate the end gage and the shaft to swing the gage .out of thepathway of the cutting knives upon the reciprocation thereof.

6. In a paper cutting machine, the combination with the frame and a pairof knife carriers mounted to reciprocate in parallel relation, of aknife secured to one carrier and a pair of knives secured to the othercarrier at right angles to the single knife, two driving shafts, withintermeshing gears to reciprocate the knife carriers, and an end gagepivoted to the frame with a cam on one of the driving shafts, andintermediate connection with the gage whereby the operation of thedriving shaft will swing the end gage out of the pathway of the endknives.

CHARLES SEYBOLD.

Witnesses:

WM. F. KINzELER, EMMETT E. LEO.

